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This device is for use with the MPEC SA380TX and SA380TX-L units only.
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Wiring
The device can be wired to the analogue connections of either a SA380TX or SA380TX-L data logging unit.
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The channels are as follows;
| Warning |
|---|
THE CHANNELS OF THE SA380V-I ARE SENSITIVE TO OVER VOLTAGE. PLEASE ENSURE ALL TERMINATIONS ARE CORRECT BEFORE CONNECTING THE DEVICE TO THE DATA LOGGER. |
To Logger:
Vi (Voltage Input) | Power to this SA380V-I channel. This is to be connected to the data logger’s analogue channel 24V supply pin (24). |
So (4-20mA Output) | 4-20mA output of this SA380V-I channel. This is to be connected to the signal in (S) connection on the analogue channel of the data logger. |
0 (Common) | Common Ground (0). |
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Vo (Voltage Out) | Power to sensor, this is a factory set, optional voltage output to power the connected sensor. |
Si (Signal In) | Signal input from the sensor to the device. This connection is to supply the output of the sensor into the device so that it can be converted from a voltage to a 4-20mA signal. |
0 (Common) | Common Ground. |
SA380TX TX-L Master Slave + SA380V-I Points heating Typical Circuit:
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Power Up
A soon as the device is connected to the 24V output of the data loggers analogue channels it will be powered.
There is no power LED located on the device to indicate if the device is powered up.
To ensure that there is power to the device and it is working correctly, configure the analogue channel on the data logger as per manufacturer’s instructions,
and then check for a reading on the display of the data logger in the channel that was just configured.
If a reasonable reading is displayed then the device is powered and functioning correctly.
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Installation
The unit has the same mounting studs as the MPEC SA380TX and SA380TX-L units. This means it can be mounted on relay bar in the same way.
The preferred mounting location for the unit would be next to the data logger it will be connected to, however this is not essential.
To secure the unit in its mounting position, simply place the studs through the mounting holes on the relay bar,
and then bolt the unit into place by tightening the nylock nuts provided with the SA380V-I Signal Conditioner onto the mounting studs.